Analysis

  • max time kernel
    148s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    19-10-2021 09:55

General

  • Target

    SHIP'S PARTICULARS - MV TBN.doc.exe

  • Size

    770KB

  • MD5

    545eaa55c962df648708bb0bb01bcb28

  • SHA1

    39e0c699f9bd668dc65561aef01451deeb41b073

  • SHA256

    138e666baba119aed949d7064ded4f2ddafaa85e95b09bbd5c4ed7d2b77ac9ef

  • SHA512

    4892171284b009dc58a0ea5a781006e52c1dc729e924f386749336b9e56880ecdf6f67e43bee9c8f26b345cfcaab4b53305cd78f33a04d1b3d6016db4a2684cb

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.penavico--cz.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Fq$L%J((!6

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 11 IoCs
  • Executes dropped EXE 4 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SHIP'S PARTICULARS - MV TBN.doc.exe
    "C:\Users\Admin\AppData\Local\Temp\SHIP'S PARTICULARS - MV TBN.doc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1664
    • C:\Users\Admin\AppData\Local\Temp\SHIP'S PARTICULARS - MV TBN.doc.exe
      "C:\Users\Admin\AppData\Local\Temp\SHIP'S PARTICULARS - MV TBN.doc.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:332
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\rb57\rb57.exe'" /f
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:536
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\rb57\rb57.exe'" /f
        3⤵
        • Creates scheduled task(s)
        PID:1040
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Local\Temp\SHIP'S PARTICULARS - MV TBN.doc.exe" "C:\Users\Admin\AppData\Roaming\rb57\rb57.exe"
      2⤵
        PID:780
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {49FF8F7D-2DFE-4638-9396-E1B3487A4E5E} S-1-5-21-3456797065-1076791440-4146276586-1000:JZCKHXIN\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1716
      • C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
        C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:852
        • C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
          "C:\Users\Admin\AppData\Roaming\rb57\rb57.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1504
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\rb57\rb57.exe'" /f
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:524
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\rb57\rb57.exe'" /f
            4⤵
            • Creates scheduled task(s)
            PID:1080
      • C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
        C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:536
        • C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
          "C:\Users\Admin\AppData\Roaming\rb57\rb57.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1184
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\rb57\rb57.exe'" /f
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:1352
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /sc minute /mo 1 /tn "Nano" /tr "'C:\Users\Admin\AppData\Roaming\rb57\rb57.exe'" /f
            4⤵
            • Creates scheduled task(s)
            PID:1792
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c copy "C:\Users\Admin\AppData\Roaming\rb57\rb57.exe" "C:\Users\Admin\AppData\Roaming\rb57\rb57.exe"
          3⤵
            PID:636

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Scheduled Task

      1
      T1053

      Persistence

      Scheduled Task

      1
      T1053

      Privilege Escalation

      Scheduled Task

      1
      T1053

      Credential Access

      Credentials in Files

      3
      T1081

      Discovery

      System Information Discovery

      1
      T1082

      Collection

      Data from Local System

      3
      T1005

      Email Collection

      1
      T1114

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
        MD5

        545eaa55c962df648708bb0bb01bcb28

        SHA1

        39e0c699f9bd668dc65561aef01451deeb41b073

        SHA256

        138e666baba119aed949d7064ded4f2ddafaa85e95b09bbd5c4ed7d2b77ac9ef

        SHA512

        4892171284b009dc58a0ea5a781006e52c1dc729e924f386749336b9e56880ecdf6f67e43bee9c8f26b345cfcaab4b53305cd78f33a04d1b3d6016db4a2684cb

      • C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
        MD5

        545eaa55c962df648708bb0bb01bcb28

        SHA1

        39e0c699f9bd668dc65561aef01451deeb41b073

        SHA256

        138e666baba119aed949d7064ded4f2ddafaa85e95b09bbd5c4ed7d2b77ac9ef

        SHA512

        4892171284b009dc58a0ea5a781006e52c1dc729e924f386749336b9e56880ecdf6f67e43bee9c8f26b345cfcaab4b53305cd78f33a04d1b3d6016db4a2684cb

      • C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
        MD5

        545eaa55c962df648708bb0bb01bcb28

        SHA1

        39e0c699f9bd668dc65561aef01451deeb41b073

        SHA256

        138e666baba119aed949d7064ded4f2ddafaa85e95b09bbd5c4ed7d2b77ac9ef

        SHA512

        4892171284b009dc58a0ea5a781006e52c1dc729e924f386749336b9e56880ecdf6f67e43bee9c8f26b345cfcaab4b53305cd78f33a04d1b3d6016db4a2684cb

      • C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
        MD5

        545eaa55c962df648708bb0bb01bcb28

        SHA1

        39e0c699f9bd668dc65561aef01451deeb41b073

        SHA256

        138e666baba119aed949d7064ded4f2ddafaa85e95b09bbd5c4ed7d2b77ac9ef

        SHA512

        4892171284b009dc58a0ea5a781006e52c1dc729e924f386749336b9e56880ecdf6f67e43bee9c8f26b345cfcaab4b53305cd78f33a04d1b3d6016db4a2684cb

      • C:\Users\Admin\AppData\Roaming\rb57\rb57.exe
        MD5

        545eaa55c962df648708bb0bb01bcb28

        SHA1

        39e0c699f9bd668dc65561aef01451deeb41b073

        SHA256

        138e666baba119aed949d7064ded4f2ddafaa85e95b09bbd5c4ed7d2b77ac9ef

        SHA512

        4892171284b009dc58a0ea5a781006e52c1dc729e924f386749336b9e56880ecdf6f67e43bee9c8f26b345cfcaab4b53305cd78f33a04d1b3d6016db4a2684cb

      • memory/332-60-0x0000000000080000-0x00000000000BC000-memory.dmp
        Filesize

        240KB

      • memory/332-58-0x0000000000080000-0x00000000000BC000-memory.dmp
        Filesize

        240KB

      • memory/332-63-0x0000000000080000-0x00000000000BC000-memory.dmp
        Filesize

        240KB

      • memory/332-66-0x0000000000080000-0x00000000000BC000-memory.dmp
        Filesize

        240KB

      • memory/332-69-0x0000000000080000-0x00000000000BC000-memory.dmp
        Filesize

        240KB

      • memory/332-70-0x0000000000080000-0x0000000000082000-memory.dmp
        Filesize

        8KB

      • memory/332-57-0x0000000000080000-0x00000000000BC000-memory.dmp
        Filesize

        240KB

      • memory/332-62-0x0000000000436A8E-mapping.dmp
      • memory/332-59-0x0000000000080000-0x00000000000BC000-memory.dmp
        Filesize

        240KB

      • memory/332-75-0x0000000004B50000-0x0000000004B51000-memory.dmp
        Filesize

        4KB

      • memory/524-98-0x0000000000000000-mapping.dmp
      • memory/536-105-0x0000000004C40000-0x0000000004C41000-memory.dmp
        Filesize

        4KB

      • memory/536-72-0x0000000000000000-mapping.dmp
      • memory/536-101-0x0000000000000000-mapping.dmp
      • memory/636-121-0x0000000000000000-mapping.dmp
      • memory/780-73-0x0000000000000000-mapping.dmp
      • memory/852-79-0x00000000002B0000-0x00000000002B1000-memory.dmp
        Filesize

        4KB

      • memory/852-81-0x0000000004D80000-0x0000000004D81000-memory.dmp
        Filesize

        4KB

      • memory/852-77-0x0000000000000000-mapping.dmp
      • memory/1040-74-0x0000000000000000-mapping.dmp
      • memory/1080-99-0x0000000000000000-mapping.dmp
      • memory/1184-124-0x0000000000730000-0x0000000000731000-memory.dmp
        Filesize

        4KB

      • memory/1184-111-0x0000000000436A8E-mapping.dmp
      • memory/1352-113-0x0000000000000000-mapping.dmp
      • memory/1504-96-0x00000000000D0000-0x00000000000D2000-memory.dmp
        Filesize

        8KB

      • memory/1504-100-0x0000000004AD0000-0x0000000004AD1000-memory.dmp
        Filesize

        4KB

      • memory/1504-89-0x00000000000D0000-0x000000000010C000-memory.dmp
        Filesize

        240KB

      • memory/1504-87-0x0000000000436A8E-mapping.dmp
      • memory/1504-95-0x00000000000D0000-0x000000000010C000-memory.dmp
        Filesize

        240KB

      • memory/1504-92-0x00000000000D0000-0x000000000010C000-memory.dmp
        Filesize

        240KB

      • memory/1664-54-0x00000000001A0000-0x00000000001A1000-memory.dmp
        Filesize

        4KB

      • memory/1664-56-0x0000000004BC0000-0x0000000004BC1000-memory.dmp
        Filesize

        4KB

      • memory/1792-125-0x0000000000000000-mapping.dmp